Implement PromoteOp for *EXTLOAD, allowing MallocBench/gs to Legalize

llvm-svn: 23715

1 files changed, 10 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 8ea3eb78847..3fcf45afe38 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -2350,6 +2350,16 @@ SDOperand SelectionDAGLegalize::PromoteOp(SDOperand Op) {
     // Remember that we legalized the chain.
     AddLegalizedOperand(Op.getValue(1), Result.getValue(1));
     break;
+  case ISD::SEXTLOAD:
+  case ISD::ZEXTLOAD:
+  case ISD::EXTLOAD:
+    Tmp1 = LegalizeOp(Node->getOperand(0));   // Legalize the chain.
+    Tmp2 = LegalizeOp(Node->getOperand(1));   // Legalize the pointer.
+    Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1, Tmp2,
+                         Node->getOperand(2), Node->getOperand(3));
+    // Remember that we legalized the chain.
+    AddLegalizedOperand(Op.getValue(1), Result.getValue(1));
+    break;
   case ISD::SELECT:
     switch (getTypeAction(Node->getOperand(0).getValueType())) {
     case Expand: assert(0 && "It's impossible to expand bools");